一、引言 短网是电弧炉中重要的组成部分,同时也是电弧炉中较薄弱的环节。电极夹持器和接触铜瓦不仅是连结短网向电弧炉传输电流的装置,还要起到把紧电极,带动电极上、下移动的作用。钢瓦本身的电阻以及铜瓦与电极接触电阻所消耗的电功率占整个电弧炉短网和变压器总的功率消耗的20％左右。电极把持器和钢瓦都是处在很恶劣的条件下工作,它们受到电弧炉热辐射的影响,周围环境温度很高, I. Introduction Short mesh is an important part of EAF, but also the weaker link in EAF. The electrode holder and the contact copper tile are not only devices for connecting the short wire to the electric arc furnace for transmitting current, but also serve to push the electrode tightly and drive the electrode up and down. The electric resistance of the steel tile itself and the contact resistance of the copper tile and the electrode occupy about 20% of the total power consumption of the entire short circuit of the electric arc furnace and the transformer. Electrode holder and steel tile are working in very harsh conditions, they are affected by the heat radiation electric arc furnace, the ambient temperature is high,